You know what I call solar--fusion power. There's a giant fusion reactor running for free. We simply need to extract the useful energy. Want to build a terrestrial fusion reactor? A conventional nuclear reactor? You still need to extract useful energy and deal with excess heat. The way I see it, from an economic perspective, long-term, solar wins. Of course, this is just my long-view
I installed solar panels in my backyard, and then texted my dad that my basement is now powered by fusion with a roughly eight minute delay.
He then asked "isn't pretty much all power on earth outside of nuclear fission technically done by fusion if we give enough of a delay?". I didn't really have a rebuttal to that.
Not geothermal I would think?
Actually thinking back I think he might have said "nuclear fission and geothermal". This was months ago.
Arguably nuclear fission in this case.
Geothermal is not nuclear fission. It's some combination of primordial heat from the formation of the Earth (which was gravitational energy) and radioactive decay (which is distinct from fission).